Inquiry (采购产品): Wall penetration sleeve We need a waterproof wall penetration sleeve for a 4" pipe through a 24" concrete ceiling. Thank you, Stefan Mihaeli P.E. New York City Department of Environmental Protection **** Hidden Message ***** Stefan Mihaeli NY 10532 USA Company: N.Y.C. D.E.P. Phone: (914) 741 5121 Fax: (914) 741 0145 E-mail: smihaeli@dep.nyc.gov **** Hidden Message ***** smihaeli@dep.nyc.gov
